Mayweather, who is on a tour promoting his September rematch with Marcos Maidana, appears to not know who Rousey is.

It should be noted that Mayweather is a master showman, and he may be pulling a fast one here. It would be pretty surprising if he didn't actually know who Rousey is, not only because of what she and White said but because Rousey is a high-profile fighter who has even has filmed several movies (although none have been released yet).

Or, perhaps Mayweather is truly unaware of Rousey. The man runs a $100 million-per-year enterprise and maybe he's too busy to have read up on Rousey.